So we all know that at least one of the iPhones is rumored to contain an embedded home button this year. However, there's something nobody has been talking about. Currently the camera uses a sapphire lens so that the camera sensor doesn't pick up scratches. The home button also uses sapphire so that the fingerprint sensor doesn't pick up scratches. If Touch ID is embedded into the display then wouldn't it need a sapphire screen to prevent scratches? A couple years ago Apple planned on using sapphire from GT Advanced for the display. Of course, it didn't really make much sense to use sapphire back then and obviously Apple ended up not using sapphire for the displays anyway. However, now it would make more sense since Touch ID will now be embedded in the display. So do you think this year Apple will finally use sapphire displays and if not then how will Apple make sure the sensor always gets an accurate reading without scratches/abrasions interfering?